• pron. 哪/那一个；哪/那一些
• adj. 哪一个；哪一些

来自古英语hwi-lic,什么样的，hwi,什么，词源同what,lic,样子，物体，词源同like。引申词义哪一个，哪一件。

which

which: [OE] Etymologically, which means ‘what like, of what form or sort?’ The word was formed in the prehistoric Germanic period from the interrogative base *khwa-, *khwe- (source of English what, who, etc) and *līka- ‘body, form’ (source of English like and also incorporated into English each and such). Its Germanic relatives include German welch and Dutch welk ‘which’.
=> like

which (pron.)

Old English hwilc (West Saxon, Anglian), hw?lc (Northumbrian) "which," short for hwi-lic "of what form," from Proto-Germanic *hwa-lik- (cognates: Old Saxon hwilik, Old Norse hvelikr, Swedish vilken, Old Frisian hwelik, Middle Dutch wilk, Dutch welk, Old High German hwelich, German welch, Gothic hvileiks "which"), from *hwi- "who" (see who) + *likan "body, form" (cognates: Old English lic "body;" see like (adj.)). In Middle English used as a relative pronoun where Modern English would use who, as still in the Lord's Prayer. Old English also had parallel forms hwelc and hwylc, which disappeared 15c.

1. He lived on an invalidity pension which came as a weekly giro.

他靠每周领取的作为病残养老金的直接转账救济支票过日子。

来自柯林斯例句

2. Politicians want a lap-dog press which will uncritically report their propaganda.

政客们想要的是不问是非、甘为他们搞宣传的哈巴狗一样的新闻媒体。

来自柯林斯例句

3. We were in the same college, which was male-only at that time.

我们那时在同一所学院，当时只招男生。

来自柯林斯例句

4. We gained a rich supply of data which would normally be inaccessible.

我们得到了通常难以获取的大量数据。

来自柯林斯例句

5. "Which one of these do you want?" — "I don't mind."

“你想要这里面的哪一个？”——“都可以。”

来自柯林斯例句